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ffmpeg: make 'bits_per_raw_sample' option more useful

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Currently bits_per_raw_sample is exposed as an AVCodecContext option.
The option is not very useful, because ffmpeg 1) overwrites it with
a value from the upstream codec, or 2) it resets the value whenever
the video is resampled.

This patch adds the -bits_per_raw sample option to FFmpeg, and
caches the value like is done for the -pix_fmt option.

Example usage:
ffmpeg v210.avi -pix_fmt rgb48 -bits_per_raw_sample 10 out%d.dpx

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
This commit is contained in:
Peter Ross 2011-04-03 10:14:00 +10:00 committed by Michael Niedermayer
parent 0e09997fa4
commit 100a6b7c77
1 changed files with 4 additions and 1 deletions
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5
ffmpeg.c
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@ -151,6 +151,7 @@ static int frame_height = 0;
static float frame_aspect_ratio = 0;
static int frame_aspect_ratio_override = 0;
static enum PixelFormat frame_pix_fmt = PIX_FMT_NONE;
static int frame_bits_per_raw_sample = 0;
static enum AVSampleFormat audio_sample_fmt = AV_SAMPLE_FMT_NONE;
static int max_frames[4] = {INT_MAX, INT_MAX, INT_MAX, INT_MAX};
static AVRational frame_rate;
@ -2288,7 +2289,7 @@ static int transcode(AVFormatContext **output_files,
ost->original_height = icodec->height;
ost->original_width = icodec->width;
#endif
codec->bits_per_raw_sample= 0;
codec->bits_per_raw_sample= frame_bits_per_raw_sample;
}
ost->resample_height = icodec->height;
ost->resample_width = icodec->width;
@ -3516,6 +3517,7 @@ static void new_video_stream(AVFormatContext *oc, int file_idx)
video_enc->height = frame_height;
video_enc->sample_aspect_ratio = av_d2q(frame_aspect_ratio*video_enc->height/video_enc->width, 255);
video_enc->pix_fmt = frame_pix_fmt;
video_enc->bits_per_raw_sample = frame_bits_per_raw_sample;
st->sample_aspect_ratio = video_enc->sample_aspect_ratio;
choose_pixel_fmt(st, codec);
@ -4315,6 +4317,7 @@ static const OptionDef options[] = {
{ "s", HAS_ARG | OPT_VIDEO, {(void*)opt_frame_size}, "set frame size (WxH or abbreviation)", "size" },
{ "aspect", HAS_ARG | OPT_VIDEO, {(void*)opt_frame_aspect_ratio}, "set aspect ratio (4:3, 16:9 or 1.3333, 1.7777)", "aspect" },
{ "pix_fmt", HAS_ARG | OPT_EXPERT | OPT_VIDEO, {(void*)opt_frame_pix_fmt}, "set pixel format, 'list' as argument shows all the pixel formats supported", "format" },
{ "bits_per_raw_sample", OPT_INT | HAS_ARG | OPT_VIDEO, {(void*)&frame_bits_per_raw_sample}, "set the number of bits per raw sample", "number" },
{ "croptop", OPT_FUNC2 | HAS_ARG | OPT_VIDEO, {(void*)opt_frame_crop}, "Removed, use the crop filter instead", "size" },
{ "cropbottom", OPT_FUNC2 | HAS_ARG | OPT_VIDEO, {(void*)opt_frame_crop}, "Removed, use the crop filter instead", "size" },
{ "cropleft", OPT_FUNC2 | HAS_ARG | OPT_VIDEO, {(void*)opt_frame_crop}, "Removed, use the crop filter instead", "size" },